Note 213 — BOOK II. AN ACCOUNT OF THE WORLD AND THE ELEMENTS.
John Bostock translation
“Ἁψὶς, ligneus rotæ circulus, ab ἅπτω necto;” Hederic in loco. The term is employed in a somewhat different sense by the modern astronomers, to signify the point in the orbit of a planet, when it is either at the greatest or the least distance from the earth, or the body about which it revolves; the former being termed the apogee, aphelion, or the higher apsis; the latter the perigee, perhelion, or lower apsis; Jennings on the Globes, pp. 64, 65.